For S1-200 Systems – HR-07, HR-14, and HR-23 Pumps
The helicoidal pumps in the S1-200 range are designed for easy connection to standard 1" hoses (equivalent to a 25mm internal diameter). A butterfly clamp is included in the system delivery to secure the hose connection.
If you need to use hoses of a different size, you can install an appropriate adapter.
Further reading
For S1-700 Systems – CST-2-10 and CST-4-6 Pumps
The CST centrifugal pumps used in S1-700 systems are available with either "Rp" or "NPT" threaded discharges, depending on the standard used in your country.
For details on thread types and ordering codes, please refer to the last page of the "S1-700 datasheet".
We recommend installing an appropriate adapter on the pump discharge based on the thread type (Rp or NPT) and the discharge size. These vary by pump model, as shown below:
| Pump model | Thread type / Discharge size | |
| CST-2-10 | Rp 1 1/4” | NPT 1 1/4” |
| CST-4-6 | Rp 1 1/2” | NPT 1 1/2” |
Important: The adapter material (plastic or steel) should match the type of piping used in your installation. Since this depends on your system configuration, the adapter is not included in the scope of delivery and should be sourced locally.
